CN101700944A - Method for increasing utilization rate of ozone jointly processing waste water with biological aerated filter - Google Patents
Method for increasing utilization rate of ozone jointly processing waste water with biological aerated filter Download PDFInfo
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- CN101700944A CN101700944A CN200910186066A CN200910186066A CN101700944A CN 101700944 A CN101700944 A CN 101700944A CN 200910186066 A CN200910186066 A CN 200910186066A CN 200910186066 A CN200910186066 A CN 200910186066A CN 101700944 A CN101700944 A CN 101700944A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a method for increasing utilization rate of ozone jointly processing waste water with a biological aerated filter, which comprises the following steps: a dissolvent air pump communicated with water is inhaled with ozone; under the pressurization of the dissolvent air pump, the ozone is dissolved in water; an air-release device decompresses and releases water dissolved with ozone to an ozone reactor so that the ozone forms micro-bubbles which fully contact with waste water entering into the ozone reactor, thus oxidizing and processing organic matter in waste water; the waste water enters into an attenuation pool after being oxidized and processed by the ozone reactor; the water coming out of the attenuation pool reenters the biological aerated filter for biology treatment and then is discharged; an automatic monitoring and controlling device is used for monitoring ozone remnant concentration in yielding water oxidized and processed by the ozone reactor in real time and automatically adjusts the ozone output quantity of the ozone reactor. The ozone addition quantity is adopted for automatically regulation control in real time, thus avoiding that the ozone quantity generated in the ozone reactor is less than the ozone quantity required by water treatment and the occurrence of waste as the ozone quality is larger than the required ozone amount; therefore, the utilization rate of the ozone is increased by 20-45%.
Description
Technical field
The present invention relates to effluent sewage and handle and the regeneration method, especially relate to the method that improves ozone utilization rate in ozone and the BAF combination treatment waste water.
Background technology
At present, biological aerated filter process has become the comparatively advanced technology of wastewater treatment, and it has the characteristics that load is big, water quality treatment is high, floor space is little of handling.But the organism of, complex structure big for molecular weight in the waste water, bio-refractory, the processing rate of BAF is lower.For this reason, a kind of waste water combined treatment process that adopts ozone oxidation and BAF cooperation has appearred again at present, the cardinal principle of its combined treatment process is: at first utilize ozone oxidation method, the oxidation operation of molecular weight is big, complex structure, bio-refractory is the organism of small molecules, readily biodegradable; And then utilize the biological degradation of BAF to remove.This method improves to a certain extent to organic clearance, has obviously improved treat effluent water quality.But also there is shortcoming in combined treatment process: the one, and the ozone utilization rate of combined treatment process is low.Ozone oxidation in the combined treatment process adopts the method at bottom, ozone oxidation pond aeration mostly, and the gas that will contain ozone is diffused in the water by perforated pipe or microporous aeration device.Because after containing the gas process perforated pipe or microporous aeration device of ozone, the bubble diameter of formation is big, and (adopt perforated pipe aerating regulation, bubble diameter is generally 0.5-5mm; Adopt the microporous aeration device aeration, bubble diameter is generally 0.1-2mm), the less (gas of isodose of specific surface area, bubble diameter after it disperses is big more, the bubble total area is more little), be unfavorable for that ozone promptly is dissolved in the water, thereby reduced the utilization ratio of ozone.The 2nd, the ozone dosage is big, the energy consumption height.Exactly because the utilization ratio of ozone is low, therefore can only rely on and add ozone in large quantities for reaching treatment effect, the result is that combination process ozone oxidation energy consumption height, working cost height, initial cost partly is big; And the processing that produces a large amount of ozone tail gas has also increased energy consumption.The 3rd, can not in time regulate the ozone dosage.The water quality of waste water is for want of in time adjusted the effective measure of ozone dosage in continuous variation, because of the not enough effluent quality variation of ozone dosage, and causes waste because excessively add ozone sometimes when the result has.
Summary of the invention
At there being the low problem of ozone utilization rate in the above-mentioned combined treatment process, the invention provides a kind of method that can improve with the ozone utilization rate of ozone and BAF combination treatment waste water.
Raising of the present invention with the method steps of the ozone utilization rate of ozone and BAF combination treatment waste water is:
(1) in being connected with the air dissolved pump of water, suck ozone, depress, make ozone solution in water in adding of air dissolved pump,
(2) the water decompression that will be dissolved with ozone with reliever is discharged in the ozone reactor, and make ozone form microbubble and fully contact, thereby the organism in the waste water is carried out oxide treatment with the waste water that enters ozone reactor,
(3) waste water enters the decay pond after the ozone reactor oxide treatment, and the water that comes out in the decay pond enters BAF again and carries out a biological disposal upon, discharging then,
(4) utilize automatic monitoring controller, monitor the ozone residual concentration in the water outlet after the ozone reactor oxide treatment in real time, and adjust the ozone quantum of output of ozonizer automatically.
Principle of the present invention is: first, utilize the principle of the molten gas of air supporting, under certain pressure ozone (gas that perhaps contains ozone) is dissolved in the water fast, snap-out release then discharges ozone and forms the small bubbles of diameter for several to dozens of microns from water, increase the specific surface area of ozone, ozone is fully contacted with water, and accelerate ozone spreads in water, simultaneously, reduce the lift velocity that contains ozone bubbles, prolong the duration of contact of ozone and waste water.Second, according to monitor feedback ozone residual concentration in the water outlet after the ozone reactor oxide treatment, two-position controller can be regulated the ozone quantum of output of ozonizer automatically, the maximum value of setting in greater than two-position controller when the ozone residual concentration of monitor monitors, then two-position controller can reduce the ozone generating capacity in the ozonizer, when the minimum value that the ozone residual concentration of monitor monitors is set in less than two-position controller, then two-position controller can increase the ozone generating capacity in the ozonizer.Also monitor in real time, oppositely control the ozone dosage by the ozone residual concentration scope of setting in the ozone reactor water outlet, reach ozone and can satisfy the demand of handling waste water, the purpose that can save the ozone dosage again.
The present invention compared with prior art, the advantage that has is:
1, owing to taked the principle of air-dissolving air-float, therefore can only be several microns ozone bubbles at ozone reactor bottom generation diameter, the one, under the ozone situation of equal in quality, the contact area of ozone and water has increased by tens times to hundred times, has significantly improved velocity of diffusion; The 2nd because reduced the diameter of ozone bubbles, reduced the lift velocity of ozone bubbles, prolonged ozone bubbles in ozone reactor with duration of contact of waste water.Therefore, can improve the utilization ratio of ozone significantly.Through test determination, under equal conditions, compared with prior art, the utilization ratio of ozone of the present invention can improve 20-45%.
2, because employing carries out regulating automatically in real time control to the ozone dosage, can avoid the ozone amount that produces in the ozonizer demand less than water treatment, the ozone amount that can avoid again producing in the ozonizer causes waste greater than demand, thereby has improved the utilization ratio of ozone.
3, owing to can accurately control the ozone dosage, thereby reduce the treatment capacity of ozone tail gas in the BAF, saved the energy consumption that ozone tail gas is handled.
The present invention has utilized the molten gas of air supporting to produce the principle of microbubble, but the purpose of the present invention and air-float technology is different fully with the enforcement major measure: the purpose of the molten gas of air supporting is the suspended substance of branch in dried up; The present invention then is that to utilize microbubble be the specific surface area that improves ozone bubbles, increases the contact area of ozone and water, improves the velocity of diffusion of ozone, and the prolongation residence time of ozone in water, purpose is to improve the utilization ratio of ozone.Both starting point differences, the emphasis of considering during enforcement are also different: the emphasis that the molten gas of air supporting is considered is the conjugation (or adhesive capacity) that improves suspended substance in microbubble and the water; The emphasis that the present invention considers is to improve ozone to deliquescent polymer, the organic oxidation effectiveness of bio-refractory in the water, and to the suspended substance in the water, can rely on follow-up BAF to handle fully, on the contrary can effective consumption part ozone at ozone oxidation stage processing suspended substance, reduced the utilization ratio of ozone.Therefore, the present invention avoids containing the effect of the microbubble of ozone to suspended substance as far as possible, and for reaching this purpose, the suspended substance that preferably enters native system waste water limits (look waste water quality and determine, preferably be not more than 20mg/l).Too high as waste water suspension, then preferably suspended substance is carried out pre-treatment.
Description of drawings
Fig. 1 is a processing technological flow synoptic diagram of the present invention.
Embodiment
Be example with the coking wastewater deep treatment below, 1 be specifically described in conjunction with the accompanying drawings:
Certain coking chemical waste water, after conventional processing (gravity oil-removing-air supporting-A/A/O-precipitation), treat effluent COD 150mg/l (BOD only is 10mg/l), SS 40mg/l requires to carry out advanced treatment, and final outflow water COD is less than 50mg/l.Intend adopting ozone oxidation+BAF combined treatment process.For improving ozone utilization rate, reduce the ozone dosage, save processing cost, adopt the present invention to improve the method for ozone utilization rate.For the effective consumption of the SS in the reduction waste water to ozone, at first pass through rapid filter, SS is reduced to about 10mg/l, enter system shown in Figure 1 (the following water that will enter system shown in Figure 1 is called " waste water ") again.
Among Fig. 1, ozonizer produces ozone gas, and by monitor and two-position controller adjusting ozone generating capacity, ozone that ozonizer produces or the gas (abbreviation ozone gas) that contains ozone can be sucked by the corrosive of anti-ozone air dissolved pump by one, in air dissolved pump, feed water, water in the described feeding air dissolved pump is waste water or water outlet after the ozone reactor oxide treatment (long and short dash line is represented among the figure), also can utilize pipeline directly in air dissolved pump, to feed water, air dissolved pump extracts ozone gas in the lump, and under 0.4MPa pressure, utilize the impeller of pump that ozone gas is dissolved in waste water or dissolve in after the ozone reactor oxide treatment in the water outlet (waste water and after the ozone reactor oxide treatment water outlet can automatically switch).Through the reliever decompression, the ozone gas that abrupt release is dissolved in the water enters in the ozone reactor again, and will form the very little microbubble that contains ozone of diameter this moment in ozone reactor.Waste water enters (water-in is a little more than the ozone off-position) in the ozone reactor from the ozone reactor bottom, make microbubble that contains ozone and the waste water thorough mixing that enters in the ozone reactor, make progress the ozone reactor of flowing through (hydraulic detention time is about 1 hour) by the bottom.Ozone spreads to waste water, and with waste water in organism generation chemical reaction, be small molecules, the easy organism (it is inorganics by the ozone exhaustive oxidation that partial organic substances is also arranged) of biochemical degradation with the oxidation operation of polymer, bio-refractory.The ozone reactor water outlet enters the decay pond, because contain a spot of residue ozone after the ozone reactor oxide treatment in the water outlet, directly entering BAF can be to the microorganisms disadvantageous effect in the BAF, therefore waste water need stop 20 minutes to 2 hours in the decay pond, ozone concn was decayed to satisfy ozone residual concentration in the BAF should be controlled at the processing requirement of 0.10-0.15mg/l scope.Be provided with the monitor of monitoring ozone residual concentration at ozone reactor water outlet one end, monitor links to each other with two-position controller, two-position controller links to each other with ozonizer, setting ozone residual concentration normal range in two-position controller is 0.1-0.2m mg/l, the normal range of whether setting by the ozone residual concentration in the monitoring ozone reactor water outlet, and oppositely control the ozone quantum of output of ozonizer by two-position controller, the water that comes out in decay pond enters BAF, in BAF, be filled with ceramic grain filter, show the microbial film of growing at ceramic grain filter, after waste water is handled through BAF, the organism of most bio-degradables is assimilated by microbial film in the waste water, organism (COD) content is less than 50mg/l in the water after BAF is handled, reach the water outlet requirement of wastewater treatment, more outwards discharging or reuse.
Claims (2)
1. method that improves with the ozone utilization rate of ozone and BAF combination treatment waste water is characterized in that:
(1) in being connected with the air dissolved pump of water, suck ozone, depress, make ozone solution in water in adding of air dissolved pump,
(2) the water decompression that will be dissolved with ozone with reliever is discharged in the ozone reactor, and make ozone form microbubble and fully contact, thereby the organism in the waste water is carried out oxide treatment with the waste water that enters ozone reactor,
(3) waste water enters the decay pond after the ozone reactor oxide treatment, and the water that comes out in the decay pond enters BAF again and carries out a biological disposal upon, discharging then,
(4) utilize automatic monitoring controller, monitor the ozone residual concentration in the water outlet after the ozone reactor oxide treatment in real time, and adjust the ozone quantum of output of ozonizer automatically.
2. a kind of method that improves with the ozone utilization rate of ozone and BAF combination treatment waste water according to claim 1 is characterized in that: the water that feeds air dissolved pump is water outlet after waste water or the process ozone reactor oxide treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910186066A CN101700944A (en) | 2009-09-16 | 2009-09-16 | Method for increasing utilization rate of ozone jointly processing waste water with biological aerated filter |
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| CN200910186066A CN101700944A (en) | 2009-09-16 | 2009-09-16 | Method for increasing utilization rate of ozone jointly processing waste water with biological aerated filter |
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Cited By (26)
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|---|---|---|---|---|
| CN101830544A (en) * | 2010-05-10 | 2010-09-15 | 苏州市普滤得净化有限公司 | Ozone control device for bottled water and ozone control process |
| CN101863589A (en) * | 2010-06-09 | 2010-10-20 | 中国海洋石油总公司 | Method for advanced treatment of wastewater by using combination of catalytic ozonation and internal circulation biological filter |
| CN101921043A (en) * | 2010-08-03 | 2010-12-22 | 陕西科技大学 | Advanced treatment device for industrial wastewater |
| CN102276121A (en) * | 2011-07-26 | 2011-12-14 | 中冶南方工程技术有限公司 | Process and system for treating reverse osmosis concentrated water of cold rolling steel mill |
| CN102557230A (en) * | 2011-05-17 | 2012-07-11 | 济南市供排水监测中心 | Equipment and method for determining ozone dosage in water treatment |
| CN102826718A (en) * | 2012-09-13 | 2012-12-19 | 中国科学院广州能源研究所 | Method and device for improving oxidation efficiency of ozone-aeration biological filter combination system |
| CN103420476A (en) * | 2012-05-18 | 2013-12-04 | 上海市政工程设计研究总院（集团）有限公司 | Recycling system for tailing gas of ozone oxidation technology and recycling method thereof |
| CN103435218A (en) * | 2013-08-09 | 2013-12-11 | 中持（北京）水务运营有限公司 | Comprehensive emergency treatment method for ozone-BAF (Biological Aerated Filter) |
| CN103708639A (en) * | 2012-09-28 | 2014-04-09 | 亚中实业股份有限公司 | Metal waste liquid recovery treatment method |
| CN104163487A (en) * | 2014-08-29 | 2014-11-26 | 苏州普滤得净化股份有限公司 | Ozone adding device and method for water-saving packing water |
| CN104193114A (en) * | 2014-09-18 | 2014-12-10 | 广东溢达纺织有限公司 | Sewage treatment method and sewage treatment system |
| CN104496119A (en) * | 2014-12-17 | 2015-04-08 | 武汉钢铁(集团)公司 | Deep treatment method and device of coking wastewater |
| CN104529083A (en) * | 2014-12-30 | 2015-04-22 | 桑德集团有限公司 | Pressure type ozone reaction and microbubble biological aerated filter sewage deep processing device and method |
| CN105174432A (en) * | 2015-10-27 | 2015-12-23 | 中国环境科学研究院 | Upflow ozone biological aerated filter device and petrochemical wastewater treatment method |
| CN105967448A (en) * | 2016-06-24 | 2016-09-28 | 华南师范大学 | Treatment method and treatment system for wastewater of textile industry |
| CN106006925A (en) * | 2016-06-23 | 2016-10-12 | 北京中环嘉诚环境工程有限公司 | Catalytic ozonization system and application thereof in catalytic ozonation of hardly-degradable organic wastewater |
| CN104707492B (en) * | 2013-12-12 | 2017-09-15 | 财团法人工业技术研究院 | Ozone water generator |
| CN107902851A (en) * | 2017-12-27 | 2018-04-13 | 苏伊士水务工程有限责任公司 | Ozone treatment and biological filter combined wastewater treatment system and method |
| CN108128879A (en) * | 2017-12-08 | 2018-06-08 | 广州昭合环保科技有限公司 | A kind of oxidizing gas synergistic device |
| CN109607745A (en) * | 2019-01-08 | 2019-04-12 | 中国矿业大学(北京) | Catalytic ozonation processing system and catalysed oxidation processes and application |
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| CN111977894A (en) * | 2020-08-05 | 2020-11-24 | 华北电力科学研究院有限责任公司 | Domestic sewage treatment system and control method |
| CN112661348A (en) * | 2020-12-02 | 2021-04-16 | 苏州清然环保科技有限公司 | Treatment method and treatment system for printing and dyeing wastewater |
| US11027994B2 (en) | 2016-06-17 | 2021-06-08 | Qatar Foundation For Education, Science And Community Development | System and method for advanced oxidation of treated sewage effluent |
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2009
- 2009-09-16 CN CN200910186066A patent/CN101700944A/en active Pending
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| CN101830544A (en) * | 2010-05-10 | 2010-09-15 | 苏州市普滤得净化有限公司 | Ozone control device for bottled water and ozone control process |
| CN101863589A (en) * | 2010-06-09 | 2010-10-20 | 中国海洋石油总公司 | Method for advanced treatment of wastewater by using combination of catalytic ozonation and internal circulation biological filter |
| CN101921043A (en) * | 2010-08-03 | 2010-12-22 | 陕西科技大学 | Advanced treatment device for industrial wastewater |
| CN101921043B (en) * | 2010-08-03 | 2012-07-25 | 陕西科技大学 | Advanced treatment device for industrial wastewater |
| CN102557230A (en) * | 2011-05-17 | 2012-07-11 | 济南市供排水监测中心 | Equipment and method for determining ozone dosage in water treatment |
| CN102557230B (en) * | 2011-05-17 | 2014-02-26 | 济南市供排水监测中心 | Equipment and method for determining ozone dosage in water treatment |
| CN102276121A (en) * | 2011-07-26 | 2011-12-14 | 中冶南方工程技术有限公司 | Process and system for treating reverse osmosis concentrated water of cold rolling steel mill |
| CN103420476A (en) * | 2012-05-18 | 2013-12-04 | 上海市政工程设计研究总院（集团）有限公司 | Recycling system for tailing gas of ozone oxidation technology and recycling method thereof |
| CN102826718A (en) * | 2012-09-13 | 2012-12-19 | 中国科学院广州能源研究所 | Method and device for improving oxidation efficiency of ozone-aeration biological filter combination system |
| CN103708639A (en) * | 2012-09-28 | 2014-04-09 | 亚中实业股份有限公司 | Metal waste liquid recovery treatment method |
| CN103435218A (en) * | 2013-08-09 | 2013-12-11 | 中持（北京）水务运营有限公司 | Comprehensive emergency treatment method for ozone-BAF (Biological Aerated Filter) |
| CN104707492B (en) * | 2013-12-12 | 2017-09-15 | 财团法人工业技术研究院 | Ozone water generator |
| CN104163487B (en) * | 2014-08-29 | 2016-06-01 | 苏州普滤得净化股份有限公司 | The ozone adding set of water-saving packaging water and method |
| CN104163487A (en) * | 2014-08-29 | 2014-11-26 | 苏州普滤得净化股份有限公司 | Ozone adding device and method for water-saving packing water |
| CN104193114A (en) * | 2014-09-18 | 2014-12-10 | 广东溢达纺织有限公司 | Sewage treatment method and sewage treatment system |
| CN104496119A (en) * | 2014-12-17 | 2015-04-08 | 武汉钢铁(集团)公司 | Deep treatment method and device of coking wastewater |
| CN104529083A (en) * | 2014-12-30 | 2015-04-22 | 桑德集团有限公司 | Pressure type ozone reaction and microbubble biological aerated filter sewage deep processing device and method |
| CN104529083B (en) * | 2014-12-30 | 2016-08-24 | 桑德集团有限公司 | Pressure type ozone reaction and microbubble BAF sewage water advanced treatment apparatus |
| CN105174432A (en) * | 2015-10-27 | 2015-12-23 | 中国环境科学研究院 | Upflow ozone biological aerated filter device and petrochemical wastewater treatment method |
| US11027994B2 (en) | 2016-06-17 | 2021-06-08 | Qatar Foundation For Education, Science And Community Development | System and method for advanced oxidation of treated sewage effluent |
| CN106006925A (en) * | 2016-06-23 | 2016-10-12 | 北京中环嘉诚环境工程有限公司 | Catalytic ozonization system and application thereof in catalytic ozonation of hardly-degradable organic wastewater |
| CN105967448A (en) * | 2016-06-24 | 2016-09-28 | 华南师范大学 | Treatment method and treatment system for wastewater of textile industry |
| CN108128879A (en) * | 2017-12-08 | 2018-06-08 | 广州昭合环保科技有限公司 | A kind of oxidizing gas synergistic device |
| CN108128879B (en) * | 2017-12-08 | 2021-06-08 | 广州昭合环保科技有限公司 | Oxidizing gas synergistic system |
| CN107902851A (en) * | 2017-12-27 | 2018-04-13 | 苏伊士水务工程有限责任公司 | Ozone treatment and biological filter combined wastewater treatment system and method |
| CN109607745A (en) * | 2019-01-08 | 2019-04-12 | 中国矿业大学(北京) | Catalytic ozonation processing system and catalysed oxidation processes and application |
| CN109607745B (en) * | 2019-01-08 | 2020-03-10 | 中国矿业大学(北京) | Ozone catalytic oxidation treatment system, catalytic oxidation method and application |
| CN110835223A (en) * | 2019-11-02 | 2020-02-25 | 上海城市水资源开发利用国家工程中心有限公司 | Device and method for treating antibiotics in bottom mud of aquaculture pond |
| CN111977894A (en) * | 2020-08-05 | 2020-11-24 | 华北电力科学研究院有限责任公司 | Domestic sewage treatment system and control method |
| CN112661348A (en) * | 2020-12-02 | 2021-04-16 | 苏州清然环保科技有限公司 | Treatment method and treatment system for printing and dyeing wastewater |
| CN115677020A (en) * | 2022-12-07 | 2023-02-03 | 如东深水环境科技有限公司 | Organic wastewater treatment method and system integrating ozone oxidation and biological activated carbon |
| CN115818820A (en) * | 2022-12-07 | 2023-03-21 | 如东深水环境科技有限公司 | Ozone oxidation device for predicting residual concentration of ozone based on self-adaptive feedforward network |
| CN115818820B (en) * | 2022-12-07 | 2023-09-12 | 如东深水环境科技有限公司 | Ozone oxidation device based on self-adaptive feedforward network predicts ozone residual concentration |
| CN115677020B (en) * | 2022-12-07 | 2023-12-05 | 如东深水环境科技有限公司 | Method for treating organic wastewater by combining ozone oxidation and biological activated carbon |
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